Clinically the nail organ ist easy to investigate. When estimating dermato-
rheumatological diseases, knowledge of important associated nail symptoms i
s extremely helpful. In some diseases like osteoarthropathia psoriatica and
special variants, Reiter's syndrome and connective tissue disease, typical
or even characteristic symptoms can be found. in other disorders like rheu
matoid arthritits, goal and systemic vasculitis, associated nail disorders
are not uncommon, but of less diagnostic specificity. We review data from t
he literature and from our dermato-rheumatological outpatient clinic.